Type
Zone
Age range
360–358.86 Ma
Mississippian
Tournaisian
Late Devonian
Famennian
Siphonodella sulcata
Siphonodella praesulcata
Palmatolepis gracilis expansa
360.1360.0359.9359.9359.9359.8359.8359.7359.6359.6359.6359.5359.4359.4359.4359.3359.3359.2359.1359.1359.1359.0358.9358.9358.9